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參數(shù)資料
| 型號： | MAX6887RETE+ |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | Hex/Quad, Power-Supply Supervisory Circuits |
| 中文描述： | 6-CHANNEL POWER SUPPLY MANAGEMENT CKT, QCC16 |
| 封裝： | 5 X 5 MM, 0.80 MM HEIGHT, ROHS COMPLIANT, MO-220WHHB, TQFN-16 |
| 文件頁數(shù)： | 12/13頁 |
| 文件大小： | 132K |
| 代理商： | MAX6887RETE+ |
MAX6887/MAX6888
Hex/Quad, Power-Supply Supervisory Circuits
8
_______________________________________________________________________________________
detector input (IN1–IN6) to monitor a user-defined sup-
ply voltage:
where VMON is the desired voltage to be monitored.
Use the following procedure to design the proper volt-
age-divider and calculate thresholds:
1) Pick a value for R2. Use the equation above with
the desired supply voltage to be monitored and
solve for R1. Use high-value resistors R1 and R2 to
minimize current consumption due to low leakage
currents.
2) To find the actual undervoltage and overvoltage
thresholds, use the following equations:
VREFUV and VREFOV are the undervoltage and overvolt-
age thresholds listed in Tables 1 and 2 that allow
adjustable thresholds. Their values are based on toler-
ances of ±7.5% and ±12.5% from a 0.6V reference.
See the
Selector Guide to find which thresholds in
Tables 1 and 2 are adjustable.
Manual Reset (
MR)
Many P-based products require manual reset capability
to allow an operator or external logic circuitry to initiate a
reset. The manual reset input (MR) can be connected
directly to a switch without an external pullup resistor or
debouncing network. MR is internally pulled up to BP.
Leave unconnected if not used. MR is internally pulled
up to BP through a 10A current source. MR is designed
to reject fast, falling transients (typically 100ns pulses)
and MR must be held low for a minimum of 1s to assert
RESET. Connect a 0.1F capacitor from MR to ground to
provide additional noise immunity. After MR transitions
from low to high, RESET remains asserted for the dura-
tion of its time delay.
Margin Output Disable (
MARGIN)
MARGIN allows system-level testing while power sup-
plies exceed the normal operating ranges. Drive
MARGIN low to hold RESET, OV, and WDO in their
VV
V
VV
V
ACTUALUV
MON
REFUV
ACTUALOV
MON
REFOV
=×
=×
06
.
06
2
12
.V
V
R
RR
MON
=×
+
Table 1. MAX6887 Threshold Options
UV THRESHOLDS (V)
OV THRESHOLDS (V)
PART
IN1
IN2
IN3
IN4
IN5
IN6
IN1
IN2
IN3
IN4
IN5
IN6
MAX6887AETE
4.620
3.060
2.310
1.670
0.557
5.360
3.540
2.680
1.930
0.643
MAX6887BETE
4.620
3.060
2.310
0.557
5.360
3.540
2.680
0.643
MAX6887CETE
4.620
3.060
1.670
0.557
5.360
3.540
1.930
0.643
MAX6887DETE
3.060
2.310
1.670
1.390
0.557
3.540
2.680
1.930
1.610
0.643
MAX6887EETE
3.060
2.310
1.670
0.557
3.540
2.680
1.930
0.643
MAX6887FETE
3.060
2.310
1.390
0.557
3.540
2.680
1.610
0.643
MAX6887GETE
3.060
2.310
0.557
3.540
2.680
0.643
MAX6887HETE
3.060
1.670
0.557
3.540
1.930
0.643
MAX6887QETE
0.557
0.643
MAX6887IETE
4.380
2.880
2.190
1.580
0.527
5.620
3.700
2.810
2.020
0.673
MAX6887JETE
4.380
2.880
2.190
0.527
0.557
5.620
3.700
2.810
0.673
MAX6887KETE
4.380
2.880
1.580
0.527
0.557
5.620
3.700
2.020
0.673
MAX6887LETE
2.880
2.190
1.580
1.310
0.557
3.700
2.810
2.020
1.680
0.673
MAX6887METE
2.880
2.190
1.580
0.527
0.557
3.700
2.810
2.020
0.673
MAX6887NETE
2.880
2.190
1.310
0.527
0.557
3.700
2.810
1.680
0.673
MAX6887OETE
2.880
2.190
0.527
0.557
3.700
2.810
0.673
MAX6887PETE
2.880
1.580
0.527
0.557
3.700
2.020
0.673
MAX6887RETE
0.527
0.673
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| MAX6887RETE+T | Hex/Quad, Power-Supply Supervisory Circuits |
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| MAX6888AETE+T | Hex/Quad, Power-Supply Supervisory Circuits |
| MAX6888BETE+ | Hex/Quad, Power-Supply Supervisory Circuits |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX6887RETE+ | 功能描述:監(jiān)控電路 Hex Power-Supply Supervisor RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX6887RETE+T | 功能描述:監(jiān)控電路 Hex Power-Supply Supervisor RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX6887RETE-T | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX6888AETE | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX6888AETE+ | 功能描述:監(jiān)控電路 Quad Power-Supply Supervisor RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
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